Literary usage of Flintheads

Below you will find example usage of this term as found in modern and/or classical literature:

1.Adventures of Dick Onslow in the Far West by William Henry Giles Kingston (1887)"It appeared that after their chief had left them they got notice that the flintheads
proposed to attack their lodges and destroy them To avoid this result ..."

2.The Heroine of the Strait: A Romance of Detroit in the Time of Pontiac by Mary Catherine Crowley (1902)"Others were tying wild turkey feathers on the arrows to guide their flight, and
binding on the poisoned flintheads with the finest thread from the raccoon. ..."